WiFi doesn't work does not correctly and he always finds Request Timed Out

Hello

I have two laptops side by side. On two laptops, I have 'ping www.google.com t' on cmd and most of the time "ping www.yahoo.com t.
Laptop shows "Request Timed Out", but it's only in time and one or two occurrences whenever it shows "Request Timed Out". Portable B shows 'Request Timed Out' more often and several times it is displayed continuously as in the screenshot.
This has been observed for a few months because I noticed on this subject.
I wonder this has to do with the firewall or antivirus? Or that it has something to do with the infection by the virus?
I am very little deep in the knowledge of it. Please bear with me if I ask funny questions. I would appreciate your help! Thanks :)

Hello

1. don't you make changes on the computer before the show?
2. what web browser do you use?
3. what anti-virus is installed on the computer?

Method 1:

You can try the steps in the link and check:
Windows wireless and wired network connection problems
http://Windows.Microsoft.com/en-us/Windows/help/wired-and-wireless-network-connection-problems-in-Windows

Method 2:
You can perform a clean boot and check if any third-party software is causing the problem.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
http://support.Microsoft.com/kb/929135
Note: After the adventures of shooting set the computer to start as usual by performing step 7 above of the Knowledge Base article.

Method 3:
You can try to disable the firewall and anti-virus installed on the computer.

Enable or disable Windows Firewall
http://Windows.Microsoft.com/en-us/Windows7/turn-Windows-Firewall-on-or-off
NOTE: turning off Windows Firewall may make your computer (and your network, if you have one) more vulnerable to damage caused by worms or hackers.
You can see the following link to disable the Antivirus installed on your computer software.

NOTE: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you should not disable your antivirus software. If you need to disable temporarily to install other software, you must reactivate as soon as you are finished. If you are connected to the Internet or a network, while your antivirus software is disabled, your computer is vulnerable to attacks

For more information, please see the following links:

Tags: Windows

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